The Pembroke Yeomanry

also known as the Castlemartin Yeomanry

The regiment was formed on the creation of the Territorial Force in April 1908 and placed under orders of the South Wales Mounted Brigade. It was headquartered at Tenby with the squadrons being headquartered as follows:

1/1st Pembroke (Castlemartin) Yeomanry

August
1914 : moved to Hereford after mobilising, but by the end of the month had moved to Thetford (Norfolk) where brigade came under orders of 1st Mounted Division. The brigade then moved to the Aylsham area and the regiment went to nearby Haveringham and Heydon.

November 1915 : dismounted.

March 1916 : moved to Egypt. On arrival the brigade merged with Welsh Border Mounted Brigade and formed the 4th Dismounted Brigade.

2 February
1917 : merged with 1/1st Glamorgan Yeomanry to form the
24th (Pembroke & Glamorgan Yeomanry) Battalion, the Welsh Regiment and came under orders of 231st Brigade in 74th (Yeomanry ) Division.

Moved to France in May 1918.

2/1st Pembroke Yeomanry

Formed
as a Second-Line regiment in September 1914. Moved to Carmarthen in early 1915, coming under orders of 2/1st South Wales Mounted Brigade. Moved during the year to Llandilo, Dorchester and by September was at Yoxford. Brigade came under orders of 1st Mounted Division.